Engineering Board Exam Reviewer · Circuit Theorems in AC Analysis · medium

A 50 V 0° source drives a 20, resistor in series with an inductor of reactance j30, . The output is taken across the inductor. Find Vout in polar form.

  1. 41.6 -33.7° V
  2. 30 0° V
  3. 41.6 146.3° V
  4. 41.6 33.7° V

Answer

D. 41.6 33.7° V

Solution

Voltage divider with complex impedances: Vout=VZ2/R+Z2=50 V·j30, /20+j30, =41.6 33.7° V.

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